The FBI has released a FLASH message containing information and indicators of compromise associated with the Ryuk ransomware. It notes that cyber criminals have targeted more than 100 businesses with Ryuj since about August 2018, encrypting files on network shares and infecting computer file systems. Ransom sums of up to $5 million have been demanded by the cyber criminals in exchange for the decryptor program. Ryuk’s targets have varied, but the FBI notes they have had a disproportionate impacts on certain kinds of organizations, which include small municipalities.